I just picked up a used Tig welder designed to run on 208-230V single phase. The problem is all the outlets in the shop are 3-phase. As I am somewhat electrically challenged, could someone point me in the right direction? Thanks, Lon
I am assuming your 3 ph supply is 208. If so, just connect 2 of the three phases to the welder and you are in business, but the caveat is that you must be certain that the input supply does not feed any 110 volt loads. I think you are safe, as the specification is 208 -230 volt. For clarity, you will have either a 4 wire or 5 wire supply. They are phase 1 through 3, a safety earth and a neutral, as the 5th wire. Your welder will have a 3 wire input. You are to use any 2 of the 3 phases and the safety earth. Do not connect the neutral.Simple. Steve
Same if the shop service is 230V delta. Two hots and a ground, welders do not require a neutral. Indeed my Syncrowave 250 TIG welder has 115V utility outlets on it for accessories such as the water cooler, and that
115V is derived from the main transformer, not requiring any neutral connection on the supply to the welder.
Steve Lusardi wrote:
phases to the welder and you are in business, but the
volt loads. I think you are safe, as the
5 wire supply. They are phase 1 through 3, a safety
You are to use any 2 of the 3 phases and the safety
Depot and Lowe's will have 50 Amp 3 conductor plugs and receptacles. They won't likely have any to match your 3 phase receptacle.
Any "real" electrical supply house will have everything you need, just get the NEMA number off your 3 phase receptacle and off the welder plug. The really good stuff like Hubbell will be pricey anywhere, cheaper brands would be P&S, Leviton or similar. Any should work just fine unless it's a high physical abuse environment.
Lon Jetivati wrote in news: email@example.com:
50 amp female cord ends are quite rare - and priced to match. $51 actually isn't bad for any name brand in that type. Try this combo of stuff:
About half the price but with the possible disadvantage of having a clunky
4" square box instead of a nice neat cord end. Not a big deal when the cord going into it has most likely a 90 degree male end anyway. The box with a 90 degree cord plugged in works quite well for laying flat and not putting strain on the connection if you tug on the cable a little.
The box method is what we usually make up when someone wants an extension or adaptor custom made.
Use your meter and measure until you find 2 that have 208-230 on them
Match them up with the wire from your mig cord..connect properly and voila! You are done...oh..thts the black and white or the two wires that are NOT green. Green goes to the lug on the plug with the ding (neutral)
The current Democratic party has lost its ideological basis for existence.
- It is NOT fiscally responsible.
- It is NOT ethically honorable.
- It has started wars based on lies.
- It does not support the well-being of americans - only billionaires.
- It has suppresed constitutional guaranteed liberties.
- It has foisted a liar as president upon America.
- It has violated US national sovereignty in trade treaties.
- It has refused to enforce the national borders.
...It no longer has valid reasons to exist. Lorad474